81968371200

Names of 81968371200

• Cardinal: 81968371200 can be written as Eighty-one billion, nine hundred sixty-eight million, three hundred seventy-one thousand, two hundred.

Scientific notation

• Scientific notation: 8.19683712 × 10¹⁰

Factors of 81968371200

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 102

Divisors of 81968371200

• Number of divisors d(n): 1080
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 19 20 24 25 27 30 32 36 38 40 45 48 50 54 57 60 64 72 73 75 76 80 81 90 95 96 100 108 114 120 128 135 144 146 150 152 160 162 171 180 190 192 200 216 219 225 228 240 243 256 270 285 288 292 300 304 320 324 342 360 361 365 380 384 400 405 432 438 450 456 475 480 486 512 513 540 570 576 584 600 608 640 648 657 675 684 720 722 730 760 768 800 810 855 864 876 900 912 950 960 972 1026 1080 1083 1095 1140 1152 1168 1200 1215 1216 1280 1296 1314 1350 1368 1387 1425 1440 1444 1460 1520 1536 1539 1600 1620 1710 1728 1752 1800 1805 1824 1825 1900 1920 1944 1971 2025 2052 2160 2166 2190 2280 2304 2336 2400 2430 2432 2560 2565 2592 2628 2700 2736 2774 2850 2880 2888 2920 3040 3078 3200 3240 3249 3285 3420 3456 3504 3600 3610 3648 3650 3800 3840 3888 3942 4050 4104 4161 4275 4320 4332 4380 4560 4608 4617 4672 4800 4860 4864 5130 5184 5256 5400 5415 5472 5475 5548 5700 5760 5776 5840 5913 6075 6080 6156 6400 6480 6498 6570 6840 6912 6935 7008 7200 7220 7296 7300 7600 7680 7695 7776 7884 8100 8208 8322 8550 8640 8664 8760 9025 9120 9234 9344 9600 9720 9728 9747 9855 10260 10368 10512 10800 10830 10944 10950 11096 11400 11520 11552 11680 11826 12150 12160 12312 12483 12800 12825 12960 12996 13140 13680 13824 13870 14016 14400 14440 14592 14600 15200 15390 15552 15768 16200 16245 16416 16425 16644 17100 17280 17328 17520 17739 18050 18240 18468 18688 19200 19440 19494 19710 20520 20736 20805 21024 21600 21660 21888 21900 22192 22800 23040 23085 23104 23360 23652 24300 24320 24624 24966 25650 25920 25992 26280 26353 27075 27360 27740 28032 28800 28880 29184 29200 29241 29565 30400 30780 31104 31536 32400 32490 32832 32850 33288 34200 34560 34656 34675 35040 35478 36100 36480 36936 37376 37449 38400 38475 38880 38988 39420 41040 41472 41610 42048 43200 43320 43776 43800 44384 45600 46170 46208 46720 47304 48600 48640 48735 49248 49275 49932 51300 51840 51984 52560 52706 54150 54720 55480 56064 57600 57760 58400 58482 59130 60800 61560 62208 62415 63072 64800 64980 65664 65700 66576 68400 69120 69312 69350 70080 70956 72200 72960 73872 74898 76950 77760 77976 78840 79059 81225 82080 83220 84096 86400 86640 87552 87600 87723 88695 88768 91200 92340 92416 93440 94608 97200 97470 98496 98550 99864 102600 103680 103968 104025 105120 105412 108300 109440 110960 112128 112347 115200 115425 115520 116800 116964 118260 121600 123120 124416 124830 126144 129600 129960 131328 131400 131765 133152 136800 138624 138700 140160 141912 144400 145920 146205 147744 147825 149796 153900 155520 155952 157680 158118 162450 164160 166440 168192 172800 173280 175200 175446 177390 177536 182400 184680 184832 186880 187245 189216 194400 194940 196992 197100 199728 205200 207360 207936 208050 210240 210824 216600 218880 221920 224694 230850 231040 233600 233928 236520 237177 243200 243675 246240 249660 252288 259200 259920 262656 262800 263530 266304 273600 277248 277400 280320 283824 288800 292410 295488 295650 299592 307800 311040 311904 312075 315360 316236 324900 328320 332880 336384 337041 345600 346560 350400 350892 354780 355072 364800 369360 374490 378432 388800 389880 393984 394200 395295 399456 410400 415872 416100 420480 421648 433200 437760 438615 443475 443840 449388 461700 462080 467200 467856 473040 474354 487350 492480 499320 504576 518400 519840 525600 527060 532608 547200 554496 554800 560640 561735 567648 577600 584820 590976 591300 599184 615600 622080 623808 624150 630720 632472 649800 656640 658825 665760 674082 693120 700800 701784 709560 710144 711531 729600 731025 738720 748980 756864 777600 779760 787968 788400 790590 798912 820800 831744 832200 840960 843296 866400 877230 886950 887680 898776 923400 924160 934400 935712 936225 946080 948708 974700 984960 998640 1009152 1036800 1039680 1051200 1054120 1065216 1094400 1109600 1123470 1135296 1155200 1169640 1181952 1182600 1185885 1198368 1231200 1247616 1248300 1261440 1264944 1299600 1313280 1317650 1331520 1348164 1386240 1401600 1403568 1419120 1423062 1462050 1477440 1497960 1513728 1555200 1559520 1576800 1581180 1597824 1641600 1663488 1664400 1681920 1685205 1686592 1732800 1754460 1773900 1775360 1797552 1846800 1871424 1872450 1892160 1897416 1949400 1969920 1976475 1997280 2079360 2102400 2108240 2130432 2134593 2188800 2193075 2219200 2246940 2270592 2310400 2339280 2363904 2365200 2371770 2396736 2462400 2495232 2496600 2522880 2529888 2599200 2635300 2663040 2696328 2772480 2803200 2807136 2808675 2838240 2846124 2924100 2954880 2995920 3027456 3110400 3119040 3153600 3162360 3195648 3283200 3328800 3370410 3373184 3465600 3508920 3547800 3550720 3557655 3595104 3693600 3742848 3744900 3784320 3794832 3898800 3939840 3952950 3994560 4158720 4204800 4216480 4269186 4386150 4438400 4493880 4541184 4620800 4678560 4730400 4743540 4793472 4924800 4990464 4993200 5045760 5059776 5198400 5270600 5326080 5392656 5614272 5617350 5676480 5692248 5848200 5909760 5929425 5991840 6238080 6307200 6324720 6391296 6403779 6566400 6657600 6740820 6746368 6931200 7017840 7095600 7115310 7190208 7387200 7485696 7489800 7568640 7589664 7797600 7905900 7989120 8317440 8409600 8426025 8432960 8538372 8772300 8876800 8987760 9082368 9357120 9460800 9487080 9586944 9849600 9986400 10119552 10396800 10541200 10652160 10672965 10785312 11228544 11234700 11352960 11384496 11696400 11819520 11858850 11983680 12476160 12614400 12649440 12807558 13315200 13481640 13492736 13862400 14035680 14191200 14230620 14380416 14774400 14971392 14979600 15137280 15179328 15595200 15811800 15978240 16852050 16865920 17076744 17544600 17753600 17788275 17975520 18714240 18921600 18974160 19173888 19699200 19972800 20239104 20793600 21082400 21345930 21570624 22457088 22469400 22705920 22768992 23392800 23717700 23967360 24952320 25228800 25298880 25615116 26630400 26963280 28071360 28382400 28461240 28760832 29548800 29959200 30358656 31190400 31623600 31956480 32018895 33704100 33731840 34153488 35089200 35576550 35951040 37428480 37843200 37948320 39945600 40478208 41587200 42164800 42691860 43141248 44914176 44938800 45411840 45537984 46785600 47435400 47934720 50597760 51230232 53260800 53364825 53926560 56142720 56764800 56922480 57521664 59097600 59918400 60717312 62380800 63247200 64037790 67408200 67463680 68306976 70178400 71153100 71902080 74856960 75686400 75896640 79891200 84329600 85383720 86282496 89877600 91075968 93571200 94870800 95869440 101195520 102460464 106729650 107853120 112285440 113529600 113844960 119836800 121434624 124761600 126494400 128075580 134816400 136613952 140356800 142306200 143804160 151793280 159782400 160094475 168659200 170767440 172564992 179755200 182151936 187142400 189741600 202391040 204920928 213459300 215706240 224570880 227059200 227689920 239673600 252988800 256151160 269632800 273227904 280713600 284612400 287608320 303586560 320188950 337318400 341534880 359510400 364303872 374284800 379483200 409841856 426918600 431412480 455379840 479347200 505977600 512302320 539265600 546455808 561427200 569224800 607173120 640377900 683069760 719020800 758966400 819683712 853837200 862824960 910759680 1011955200 1024604640 1078531200 1092911616 1122854400 1138449600 1280755800 1366139520 1438041600 1517932800 1639367424 1707674400 1821519360 2049209280 2157062400 2276899200 2561511600 2732279040 3035865600 3278734848 3415348800 4098418560 4314124800 4553798400 5123023200 5464558080 6830697600 8196837120 9107596800 10246046400 13661395200 16393674240 20492092800 27322790400 40984185600 81968371200
• Sum of all divisors σ(n): 325458341208
• Sum of proper divisors (its aliquot sum) s(n): 243489970008
• 81968371200 is an abundant number, because the sum of its proper divisors (243489970008) is greater than itself. Its abundance is 161521598808

Bases of 81968371200

• Binary: 1001100010101101100100001011000000000₂
• Hexadecimal: 0x1315B21600
• Base-36: 11NLUO00

Squares and roots of 81968371200

• 81968371200 squared (81968371200²) is 6718813877180989440000
• 81968371200 cubed (81968371200³) is 550730229908482552001200128000000
• The square root of 81968371200 is 286301.1896587229
• The cube root of 81968371200 is 4343.9228337075

Scales and comparisons

• 81,968,371,200 seconds is equal to 2,606 years, 17 weeks, 5 days.
• To count from 1 to 81,968,371,200 would take you about five thousand, two hundred twelve years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 81968371200 cubic inches would be around 362 feet tall.

Recreational maths with 81968371200

• 81968371200 backwards is 00217386918
• 81968371200 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81968371200's digits is 45
• More coming soon!